Update pipeline-tools version (#79)

Author: samanehsan

adapter_pipelines/Optimus/adapter.wdl

@@ -127,7 +127,7 @@ workflow AdapterOptimus {
   Int max_cromwell_retries = 0
   Boolean add_md5s = false
 
-  String pipeline_tools_version = "v0.26.0"
+  String pipeline_tools_version = "v0.28.0"
 
   call GetInputs as prep {
     input:

adapter_pipelines/ss2_single_sample/adapter.wdl

@@ -83,7 +83,7 @@ workflow AdapterSmartSeq2SingleCell{
   Int max_cromwell_retries = 0
   Boolean add_md5s = false
 
-  String pipeline_tools_version = "v0.26.0"
+  String pipeline_tools_version = "v0.28.0"
 
   call GetInputs as prep {
     input: